I play at home, at work, while waiting at the doctor - I really am addicted! But then I get interrupted and there is no way to pause the game in progress, which messes up my times... :-( Any change of a pause option?

Unfortunately, since a person could pause a game, work it offline, and then "solve" it almost instantaneously, the times would become meaningless if a pause function was implemented.
Getting interrupted during a game is a bummer, but if the only penalty for your job interrupting your gameplay is solution time, then consider yourself fortunate.